GB1551998A - Electromagnetic detector responsive to a modification of a magnetic field - Google Patents

Electromagnetic detector responsive to a modification of a magnetic field

Info

Publication number
GB1551998A
GB1551998A GB41369/76A GB4136976A GB1551998A GB 1551998 A GB1551998 A GB 1551998A GB 41369/76 A GB41369/76 A GB 41369/76A GB 4136976 A GB4136976 A GB 4136976A GB 1551998 A GB1551998 A GB 1551998A
Authority
GB
United Kingdom
Prior art keywords
modification
magnetic field
detector responsive
electromagnetic detector
electromagnetic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB41369/76A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thales SA
Original Assignee
Thomson CSF SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Thomson CSF SA filed Critical Thomson CSF SA
Publication of GB1551998A publication Critical patent/GB1551998A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/01—Detecting movement of traffic to be counted or controlled
    • G08G1/042—Detecting movement of traffic to be counted or controlled using inductive or magnetic detectors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Traffic Control Systems (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
GB41369/76A 1975-10-07 1976-10-05 Electromagnetic detector responsive to a modification of a magnetic field Expired GB1551998A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7530695A FR2327556A1 (fr) 1975-10-07 1975-10-07 Capteur electromagnetique sensible a une modification d'un champ magnetique et son application a la circulation routiere

Publications (1)

Publication Number Publication Date
GB1551998A true GB1551998A (en) 1979-09-05

Family

ID=9160904

Family Applications (1)

Application Number Title Priority Date Filing Date
GB41369/76A Expired GB1551998A (en) 1975-10-07 1976-10-05 Electromagnetic detector responsive to a modification of a magnetic field

Country Status (16)

Country Link
US (1) US4075553A (es)
JP (1) JPS5836753B2 (es)
AT (1) AT361338B (es)
AU (1) AU501542B2 (es)
BE (1) BE846942A (es)
BR (1) BR7606685A (es)
CH (1) CH613518A5 (es)
DE (1) DE2644928C3 (es)
ES (1) ES452183A1 (es)
FR (1) FR2327556A1 (es)
GB (1) GB1551998A (es)
IT (1) IT1074710B (es)
NL (1) NL7611018A (es)
NO (1) NO141488C (es)
SE (1) SE412478B (es)
SU (1) SU841610A3 (es)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2505167A1 (fr) * 1981-05-07 1982-11-12 Mac Cormick Lab Inc Circuit et procede de determination de la position d'un dispositif dans un tissu biologique
GB2158240A (en) * 1984-04-26 1985-11-06 Standard Telephones Cables Ltd A null-balanced proximity sensor

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2371675A1 (fr) * 1976-11-19 1978-06-16 Thomson Csf Capteur electromagnetique sensible a une modification d'un champ magnetique et son application a la circulation routiere
FR2498347A2 (fr) * 1981-01-16 1982-07-23 Thomson Csf Dispositif de positionnement d'un mobile par un champ magnetique
US4455529A (en) * 1981-06-08 1984-06-19 Schlumberger Technology Corporation Digital induction logging tool including means for measuring phase quadrature components in a phase sensitive detector
EP0211905B1 (en) * 1985-02-15 1990-10-03 The Broken Hill Proprietary Company Limited Classification of steel
US4968979A (en) * 1985-04-19 1990-11-06 Omron Tateisi Electronics Co. Vehicle detecting system
JPS61245299A (ja) * 1985-04-22 1986-10-31 オムロン株式会社 路車間通信機能付き車両感知器
DE3567112D1 (en) * 1985-11-02 1989-02-02 Vallon Gmbh Metal detector for detecting metal objects
JPS63150686A (ja) * 1986-12-15 1988-06-23 Nippon Signal Co Ltd:The 金属検知器
IT1260208B (it) * 1992-11-19 1996-04-02 Giovanni Manneschi Metal detector perfezionato
ES2070702B1 (es) * 1992-12-31 1997-03-01 Alcatel Standard Electrica Dispositivo sensor de campo magnetico.
FR2828286B1 (fr) * 2001-08-02 2003-11-21 Siemens Automotive Sa Dispositif de diagnostic pour une antenne
US8314608B2 (en) 2010-06-30 2012-11-20 Hall David R Method of determining distance to a ferrous material
CN108318926A (zh) * 2018-02-09 2018-07-24 李法利 安检设备的气体检测电路及方法
EP3779919A4 (en) * 2018-03-27 2021-10-27 Kyosan Electric Mfg. Co., Ltd. DETECTION SYSTEM

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE6963C (de) * A. BANNASCH, Färbereibesitzer, in Brieg bei Breslau Waschmaschine
US661520A (en) * 1897-08-02 1900-11-13 Caryl D Haskins Automatic steering device for torpedoes.
US2160356A (en) * 1937-09-28 1939-05-30 Harry A Fore Geophysical instrument
US2807777A (en) * 1945-05-24 1957-09-24 Doll Henri-Georges Coil assembly for geophysical prospecting
US3509469A (en) * 1967-05-17 1970-04-28 Nasa Position sensing device employing misaligned magnetic field generating and detecting apparatus
US3996510A (en) * 1975-03-12 1976-12-07 General Electric Company Shielding arrangement for sensing the proximity of a metallic object

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2505167A1 (fr) * 1981-05-07 1982-11-12 Mac Cormick Lab Inc Circuit et procede de determination de la position d'un dispositif dans un tissu biologique
GB2158240A (en) * 1984-04-26 1985-11-06 Standard Telephones Cables Ltd A null-balanced proximity sensor

Also Published As

Publication number Publication date
AT361338B (de) 1981-03-10
AU501542B2 (en) 1979-06-21
FR2327556B1 (es) 1981-01-23
JPS5246834A (en) 1977-04-14
DE2644928B2 (de) 1978-11-30
SE412478B (sv) 1980-03-03
SU841610A3 (ru) 1981-06-23
JPS5836753B2 (ja) 1983-08-11
CH613518A5 (es) 1979-09-28
NL7611018A (nl) 1977-04-13
US4075553A (en) 1978-02-21
ES452183A1 (es) 1977-10-16
BR7606685A (pt) 1977-11-16
DE2644928A1 (de) 1977-04-14
FR2327556A1 (fr) 1977-05-06
DE2644928C3 (de) 1979-08-09
NO141488C (no) 1980-03-19
AU1842876A (en) 1978-04-13
NO141488B (no) 1979-12-10
NO763417L (es) 1977-04-13
SE7611003L (sv) 1977-04-08
ATA742176A (de) 1980-07-15
IT1074710B (it) 1985-04-20
BE846942A (fr) 1977-04-05

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee